Sacrificial Zinc Pencil Engine Anodes

These Engine Anodes (also known as pencil zincs) increase the longevity of your engine when installed on your engine block. Our zinc engine anodes protect heat exchangers from corrosion issues.  Coupled with brass plugs, we carry varying sizes from 1/4″ to 1″ NPT (National Pipe Thread).

All of our Pencil Zincs conform to meet highest MIL-Spec standard Mil-Spec 18001, and are manufactured by the world’s finest Boat Zinc supplier Sea Shield Marine.